Helios RM-PSW2KVA Series User Manual page 8

2-2-4 Connect chassis ground terminal to earth or to vehicle chassis using # 8 AWG
wire.
WARNING!
Any damages caused by using incorrect RS232 cable will
be outside of our warranty scope. If you are not sure which
one is correct RS232 cable, please purchase the correct
RS232 cable from us directly.
WARNING!
Operation of the inverter without a proper ground,
connection may result in an electrical safety hazard.
WARNING!
Shock Hazard. Before proceeding further, carefully check
the inverter is NOT connected to any batteries, and that all
wiring is disconnected from any electrical sources. Do not
connect the output terminals of the inverter to an incoming
AC source.
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